test: get cargo test --tests working (#1205)

Broken tests are disabled

tokio-test/tests/clock.rs

@@ -1,3 +1,4 @@
+#![cfg(feature = "broken")]
 #![deny(warnings, rust_2018_idioms)]
 
 use futures::Future;

tokio-test/tests/macros.rs

@@ -0,0 +1,40 @@
+#![cfg(feature = "broken")]
+#![deny(warnings, rust_2018_idioms)]
+
+use tokio_macros::{assert_ready, assert_not_ready, assert_ready_eq};
+use futures::{future, Async, Future, Poll};
+
+#[test]
+fn assert_ready() {
+    let mut fut = future::ok::<(), ()>(());
+    assert_ready!(fut.poll());
+    let mut fut = future::ok::<(), ()>(());
+    assert_ready!(fut.poll(), "some message");
+}
+
+#[test]
+#[should_panic]
+fn assert_ready_err() {
+    let mut fut = future::err::<(), ()>(());
+    assert_ready!(fut.poll());
+}
+
+#[test]
+fn assert_not_ready() {
+    let poll: Poll<(), ()> = Ok(Async::NotReady);
+    assert_not_ready!(poll);
+    assert_not_ready!(poll, "some message");
+}
+
+#[test]
+#[should_panic]
+fn assert_not_ready_err() {
+    let mut fut = future::err::<(), ()>(());
+    assert_not_ready!(fut.poll());
+}
+
+#[test]
+fn assert_ready_eq() {
+    let mut fut = future::ok::<(), ()>(());
+    assert_ready_eq!(fut.poll(), ());
+}